Medium fits paws 2inch- 2.4Inch. Measure while dog is standing with weight on . Includes 4 dog grip socks. Snug fit is normal-extra grip makes them stiffer than other socks but provides better traction. 3x More Grip: Performance grip is engineered to provide reliable traction even if the sock twists while dog is using them, making them the ideal anti slip dog socks for both senior dogs and active dogs alike. Senior Dogs: Specifically created with senior pet owners in mind. Maximum traction on hardwood floors and other slippery surfaces make them the perfect socks for dogs with joint and mobility issues. Patented Grip Design: Revolutionary product designed to provide comfort, stability, and mobility support. Buttonless strap design prevents dog sores and allows for a comfortable fit. Multi-Functional: Suitable for large dogs, small dogs, and senior dogs, these socks provide protection for summer keeping your dog's paws safe from hot pavement, heat, and other potential hazards. Color:Gray & Black Material:Cotton Package Contents: 4 * Dog Socks(Size Medium) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.